Newsletter Insights — independent newsletter & sponsorship data across 41K+ newsletters
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Understand your health and choose your next step with Dr. Laurie Marbas’s clear explanations, practical guides, and printable tools for everyday habits.
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Tell us your brand and audience. We send back 10-15 newsletters matched to your brief, with sponsor history and CPM ranges per placement.
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106K
Top 10% in Health
substack
Health
+18.4%
~27/post
avg comments + likes (0.03% rate)
Above category average
Daily
7.7 posts/week avg
vs 1.0/week category avg
$15/mo
Category avg: $5/mo
490
newsletters in Health
Top 10% in Health
out of 490 newslettersPublishing Frequency
Daily
Last published Oct 12, 2026
7.7 posts/week avg